Re: [RFC PATCH] PCI, kdump: Clear bus master bit upon shutdown in kdump kernel

2020-03-03 Thread Deepa Dinamani
I looked at this some more. Looks like we do not clear irqs when we do a kexec reboot. And, the bootup code maintains the same table for the kexec-ed kernel. I'm looking at the following code in intel_irq_remapping.c: if (ir_pre_enabled(iommu)) { if (!is_kdump_kernel()) {

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Re: misc nits Re: [PATCH 1/2] printk: add lockless buffer

2020-03-03 Thread John Ogness
On 2020-03-03, Petr Mladek wrote: >> diff --git a/kernel/printk/printk_ringbuffer.c >> b/kernel/printk/printk_ringbuffer.c >> new file mode 100644 >> index ..796257f226ee >> --- /dev/null >> +++ b/kernel/printk/printk_ringbuffer.c >> +/* >> + * Read

Re: misc nits Re: [PATCH 1/2] printk: add lockless buffer

2020-03-03 Thread Petr Mladek
On Mon 2020-03-02 14:43:41, John Ogness wrote: > On 2020-03-02, Petr Mladek wrote: > diff --git a/kernel/printk/printk_ringbuffer.c > b/kernel/printk/printk_ringbuffer.c > new file mode 100644 > index ..796257f226ee > --- /dev/null > +++